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Impact of annealing on morphology and thermal stability of Bi2O3 nanotube‐based microarchitectures

Impact of annealing on morphology and thermal stability of Bi2O3 nanotube‐based microarchitectures Bi2O3 nanostructures with high surface‐to‐volume ratio are attracting particular interest in catalysis, gas sensors, solar‐energy conversion, and so on. In this paper, we present the impact of annealing on morphology, structure, and optical properties of Bi2O3 nanotube‐based urchin‐like microarchitectures, which is very important to determine before their applications in many potential fields. Our results showed that below 400 °C, the microarchitectures possessed good thermal stability. While annealing at 500 °C, jointed nanoparticles with an average size of 350 nm were formed. On further increasing the annealing temperature to 600 °C, the microarchitectures were transformed into stable α‐Bi2O3 microcrystal film with a larger particle size of about 800 nm. The optical bandgaps of the annealed products were also changed according to their changes of morphology and structure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physica Status Solidi (A) Applications and Materials Science Wiley

Impact of annealing on morphology and thermal stability of Bi2O3 nanotube‐based microarchitectures

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References (30)

Publisher
Wiley
Copyright
"Copyright © 2012 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
1862-6300
eISSN
1862-6319
DOI
10.1002/pssa.201228246
Publisher site
See Article on Publisher Site

Abstract

Bi2O3 nanostructures with high surface‐to‐volume ratio are attracting particular interest in catalysis, gas sensors, solar‐energy conversion, and so on. In this paper, we present the impact of annealing on morphology, structure, and optical properties of Bi2O3 nanotube‐based urchin‐like microarchitectures, which is very important to determine before their applications in many potential fields. Our results showed that below 400 °C, the microarchitectures possessed good thermal stability. While annealing at 500 °C, jointed nanoparticles with an average size of 350 nm were formed. On further increasing the annealing temperature to 600 °C, the microarchitectures were transformed into stable α‐Bi2O3 microcrystal film with a larger particle size of about 800 nm. The optical bandgaps of the annealed products were also changed according to their changes of morphology and structure.

Journal

Physica Status Solidi (A) Applications and Materials ScienceWiley

Published: Nov 1, 2012

Keywords: ; ; ; ;

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